Sea Ledger, February 1999

1999-02-01 to 1999-02-28 · archive

issued
271
warning-days in force
4,718
in force at month end
164
sea × type cells
157

baseline: same month, previous 5 years — not available for this month (needs three fully collected reference months)

By type

typeissuedwarning-daysin force at end
Nav aids611,572.753
Cable ops49324.614
Exercises47261.77
Quakes30118.73
Incidents17379.515
Spills142018
Surveys122115
Icebergs889.94
Other7495.719
Derelicts7192.16
Containers6183.16
Missiles5933
Debris522.22
Ordnance267.92
Wrecks1229.18
War risk01124
Towing0281
Structures0281
Mines0341
Restricted0281
Volcanic0461

By sea and type · 157 cells, most issued first

cellissuedwarning-daysvs 5 y
Nav aids · North Sealong running1791
Exercises · Adriatic Sea1418.8
Exercises · North Pacific Ocean1347
Cable ops · Irish Sea and St. George's Channel1024.1
Nav aids · English Channel824.4
Spills · Gulf of Mexico768
Cable ops · Celtic Sea739.5
Exercises · North Atlantic Ocean722.2
Cable ops · English Channel721.1
Nav aids · South Atlantic Ocean5228.9
Derelicts · North Atlantic Ocean565.4
Missiles · North Pacific Ocean554
Incidents · South Pacific Oceanlong running541
Cable ops · North Atlantic Ocean522
Quakes · Solomon Sea515
Cable ops · North Sea58.9
Incidents · South Atlantic Oceanlong running473.7
Exercises · Aegean Sea460.2
Icebergs · North Atlantic Ocean454.6
Icebergs · Labrador Sea433.3
Quakes · South Pacific Ocean412.7
Other · Ionian Sea411.7
Nav aids · Irish Sea and St. George's Channel43.8
Nav aids · Mediterranean Sea - Western Basin3143.8
Nav aids · North Atlantic Oceanlong running3138.6
Containers · North Atlantic Ocean3108.6
Nav aids · Inner Seas off the West Coast of Scotland367.9
Nav aids · Celtic Sea361.6
Spills · North Pacific Ocean342
Quakes · North Pacific Ocean339.8
Surveys · North Atlantic Ocean331.8
Cable ops · Mediterranean Sea - Eastern Basin319.4
Cable ops · South China Sea311.8
Quakes · Coral Sea39
Quakes · Indian Ocean39
Nav aids · Tyrrhenian Sealong running2181.9
Incidents · North Atlantic Oceanlong running2123
Nav aids · Coral Sea237.8
Surveys · Adriatic Sealong running229.5
Nav aids · Bristol Channellong running228.7
Containers · Persian Gulf220.2
Exercises · Tyrrhenian Sea210.6
Cable ops · North Pacific Ocean29.6
Nav aids · Bass Strait29.4
Cable ops · Java Sea28.2
Surveys · Irish Sea and St. George's Channel26.2
Quakes · Arctic Ocean26
Quakes · Makassar Strait26
Quakes · Philippine Sea26
Exercises · Ligurian Sea25.9
Incidents · North Pacific Ocean20.7
Other · South Pacific Ocean168.5
Nav aids · South Pacific Oceanlong running164
Derelicts · South China Sea152.1
Cable ops · South Atlantic Ocean141.9
Nav aids · Mozambique Channel139.1
Ordnance · North Atlantic Ocean136.6
Other · South Atlantic Ocean134.8
Nav aids · Caribbean Sea129.2
Incidents · Caribbean Sealong running128.9
Surveys · North Sealong running128.3
Spills · North Atlantic Ocean128
Exercises · Mediterranean Sea - Western Basin126.5
Exercises · Caribbean Sea126.2
Exercises · Malacca Strait125.4
Incidents · North Sea124
Nav aids · Solomon Sea120.3
Exercises · Mediterranean Sea - Eastern Basin118.5
Debris · North Atlantic Ocean117.2
Spills · Caribbean Sea114
Surveys · Tyrrhenian Sea112.5
Spills · Gulf of Alaska111
Cable ops · Indian Ocean110.6
Spills · Bering Sea110
Cable ops · Eastern China Sea19.4
Cable ops · Gulf of Guinea18.6
Wrecks · Mediterranean Sea - Western Basin18.1
Nav aids · Ionian Sea18
Other · North Pacific Ocean16.7
Nav aids · Great Australian Bight16.1
Ordnance · Gulf of Aden13.3
Surveys · English Channel13.1
Quakes · Bismarck Sea13
Quakes · Ceram Sea13
Quakes · Sea of Okhotsk13
Quakes · South China Sea13
Cable ops · Mediterranean Sea - Western Basin12.5
Debris · Adriatic Sea12
Debris · Mediterranean Sea - Western Basin12
Quakes · Southern Ocean11.7
Quakes · South Atlantic Ocean11.5
Containers · North Sea11.3
Nav aids · Tasman Sea11.2
Debris · North Sea11
Derelicts · Philippine Sea10.6
Surveys · Mediterranean Sea - Eastern Basin10.5
Exercises · South China Sea10.4
Incidents · Mediterranean Sea - Eastern Basin10.2
Surveys · Ionian Sea10.1
Debris · Mediterranean Sea - Eastern Basin10
Incidents · Philippine Sea10
Other · North Sealong running0112
War risk · Persian Gulflong running0112
Other · North Atlantic Oceanlong running084
Nav aids · Persian Gulflong running084
Wrecks · North Sea081
Cable ops · Persian Gulf056
Wrecks · Persian Gulflong running056
Surveys · South Atlantic Oceanlong running056
Nav aids · Adriatic Sealong running053
Derelicts · Indian Oceanlong running046
Missiles · North Atlantic Ocean039
Nav aids · North Pacific Oceanlong running039
Surveys · Mediterranean Sea - Western Basin029
Other · Adriatic Sealong running028
Nav aids · Bismarck Sea028
Towing · Black Sealong running028
Containers · Celtic Sealong running028
Ordnance · English Channellong running028
Other · Gulf of Mexicolong running028
Nav aids · Gulf of Suez028
Other · Labrador Sealong running028
Nav aids · Ligurian Sea028
Incidents · Ligurian Sealong running028
Other · Makassar Strait028
Wrecks · Malacca Straitlong running028
Nav aids · Mediterranean Sea - Eastern Basinlong running028
Cable ops · Mozambique Channel028
Incidents · Mozambique Channel028
Restricted · North Atlantic Ocean028
Derelicts · North Pacific Oceanlong running028
Volcanic · North Pacific Ocean028
Mines · North Sea028
Structures · Persian Gulf028
Other · Red Sealong running028
Incidents · South China Sealong running028
Wrecks · South China Sea028
Nav aids · Sulu Sea028
Other · Tyrrhenian Sea028
Spills · Tyrrhenian Sea028
Wrecks · Tyrrhenian Sea028
Nav aids · Black Sea025
Containers · South Atlantic Ocean025
Nav aids · Philippine Sea018
Volcanic · Philippine Sea018
Nav aids · Indian Ocean017
Nav aids · Timor Sea011
Other · Irish Sea and St. George's Channel010
Surveys · Caribbean Sea09
Mines · North Pacific Ocean06
Surveys · Ligurian Sea04
Incidents · Red Sea04
Cable ops · Aegean Sea03
Icebergs · Indian Ocean02
Surveys · Celtic Sea01
Wrecks · Irish Sea and St. George's Channel00
Surveys · Japan Sea00

Cite: seahazards.com Sea Ledger, 1999-02, retrieved 2026-09-03

Not for navigation. Warning-days = days each warning was in force within the month, summed. Only warnings we display are counted; the ratio compares warnings issued with the mean of the reference months.

Sea Ledger, February 1999 — warnings by sea and type · seahazards